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-rw-r--r--src/straycats.c391
1 files changed, 391 insertions, 0 deletions
diff --git a/src/straycats.c b/src/straycats.c
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--- /dev/null
+++ b/src/straycats.c
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+/*
+ * straycats.c: find and process stray cat files
+ *
+ * Copyright (C) 1994, 1995 Graeme W. Wilford. (Wilf.)
+ * Copyright (C) 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2010, 2011
+ * Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Tue May 3 21:24:51 BST 1994 Wilf. (G.Wilford@ee.surrey.ac.uk)
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <signal.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <dirent.h>
+
+#include "canonicalize.h"
+#include "dirname.h"
+
+#include "gettext.h"
+#define _(String) gettext (String)
+
+#include "manconfig.h"
+
+#include "error.h"
+#include "pipeline.h"
+#include "decompress.h"
+#include "encodings.h"
+#include "orderfiles.h"
+#include "sandbox.h"
+#include "security.h"
+
+#include "mydbm.h"
+#include "db_storage.h"
+
+#include "descriptions.h"
+#include "manp.h"
+#include "manconv_client.h"
+#include "ult_src.h"
+
+extern man_sandbox *sandbox;
+
+static char *catdir, *mandir;
+
+static int check_for_stray (MYDBM_FILE dbf)
+{
+ DIR *cdir;
+ struct dirent *catlist;
+ char **names;
+ size_t names_len, names_max, i;
+ size_t lenman, lencat;
+ int strays = 0;
+
+ cdir = opendir (catdir);
+ if (!cdir) {
+ error (0, errno, _("can't search directory %s"), catdir);
+ return 0;
+ }
+
+ names_len = 0;
+ names_max = 1024;
+ names = XNMALLOC (names_max, char *);
+
+ while ((catlist = readdir (cdir)) != NULL) {
+ if (*catlist->d_name == '.' &&
+ strlen (catlist->d_name) < (size_t) 3)
+ continue;
+ if (names_len >= names_max) {
+ names_max *= 2;
+ names = xnrealloc (names, names_max, sizeof (char *));
+ }
+ names[names_len++] = xstrdup (catlist->d_name);
+ }
+ closedir (cdir);
+
+ order_files (catdir, names, names_len);
+
+ mandir = appendstr (mandir, "/", (void *) 0);
+ catdir = appendstr (catdir, "/", (void *) 0);
+ lenman = strlen (mandir);
+ lencat = strlen (catdir);
+
+ for (i = 0; i < names_len; ++i) {
+ struct mandata info;
+ char *ext, *section;
+ short found;
+ struct stat buf;
+#ifdef COMP_SRC
+ struct compression *comp;
+#endif
+
+ memset (&info, 0, sizeof (struct mandata));
+
+ *(mandir + lenman) = *(catdir + lencat) = '\0';
+ mandir = appendstr (mandir, names[i], (void *) 0);
+ catdir = appendstr (catdir, names[i], (void *) 0);
+
+ ext = strrchr (mandir, '.');
+ if (!ext) {
+ if (quiet < 2)
+ error (0, 0,
+ _("warning: %s: "
+ "ignoring bogus filename"),
+ catdir);
+ goto next_name;
+
+#if defined(COMP_SRC) || defined(COMP_CAT)
+
+# if defined(COMP_SRC)
+ } else if (comp_info (ext, 0)) {
+# elif defined(COMP_CAT)
+ } else if (strcmp (ext + 1, COMPRESS_EXT) == 0) {
+# endif /* COMP_* */
+ *ext = '\0';
+ info.comp = ext + 1;
+#endif /* COMP_SRC || COMP_CAT */
+
+ } else
+ info.comp = NULL;
+
+ ext = strrchr (mandir, '.');
+ *(mandir + lenman - 1) = '\0';
+ section = xstrdup (strrchr (mandir, '/') + 4);
+ *(mandir + lenman - 1) = '/';
+
+ /* check for bogosity */
+
+ if (!ext || strncmp (ext + 1, section, strlen (section)) != 0) {
+ if (quiet < 2)
+ error (0, 0,
+ _("warning: %s: "
+ "ignoring bogus filename"),
+ catdir);
+ goto next_section;
+ }
+
+ /*
+ * now that we've stripped off the cat compression
+ * extension (if it has one), we can try some of ours.
+ */
+
+ debug ("Testing for existence: %s\n", mandir);
+
+ if (stat (mandir, &buf) == 0)
+ found = 1;
+#ifdef COMP_SRC
+ else if ((comp = comp_file (mandir))) {
+ found = 1;
+ free (comp->stem);
+ }
+#endif
+ else
+ found = 0;
+
+ if (!found) {
+ pipeline *decomp;
+ struct mandata *exists;
+ lexgrog lg;
+ char *lang, *page_encoding;
+ char *mandir_base;
+ pipecmd *col_cmd;
+ char *col_locale;
+ char *fullpath;
+
+ /* we have a straycat. Need to filter it and get
+ its whatis (if necessary) */
+
+ lg.whatis = 0;
+ *(ext++) = '\0';
+ info.ext = ext;
+
+ /* see if we already have it, before going any
+ further */
+ mandir_base = base_name (mandir);
+ exists = dblookup_exact (dbf, mandir_base, info.ext,
+ 1);
+#ifndef FAVOUR_STRAYCATS
+ if (exists && exists->id != WHATIS_CAT)
+#else /* FAVOUR_STRAYCATS */
+ if (exists && exists->id != WHATIS_CAT &&
+ exists->id != WHATIS_MAN)
+#endif /* !FAVOUR_STRAYCATS */
+ goto next_exists;
+ debug ("%s(%s) is not in the db.\n",
+ mandir_base, info.ext);
+
+ /* fill in the missing parts of the structure */
+ info.name = NULL;
+ info.sec = section;
+ info.id = STRAY_CAT;
+ info.pointer = NULL;
+ info.filter = "-";
+ info.mtime.tv_sec = 0;
+ info.mtime.tv_nsec = 0;
+
+ drop_effective_privs ();
+ decomp = decompress_open (catdir);
+ regain_effective_privs ();
+ if (!decomp) {
+ error (0, errno, _("can't open %s"), catdir);
+ goto next_exists;
+ }
+
+ lang = lang_dir (mandir);
+ page_encoding = get_page_encoding (lang);
+ if (page_encoding)
+ add_manconv (decomp, page_encoding, "UTF-8");
+ free (page_encoding);
+ free (lang);
+
+ col_cmd = pipecmd_new_argstr
+ (get_def_user ("col", COL));
+ pipecmd_arg (col_cmd, "-bx");
+ col_locale = find_charset_locale ("UTF-8");
+ if (col_locale) {
+ pipecmd_setenv (col_cmd, "LC_CTYPE",
+ col_locale);
+ free (col_locale);
+ }
+ pipecmd_pre_exec (col_cmd, sandbox_load, sandbox_free,
+ sandbox);
+ pipeline_command (decomp, col_cmd);
+
+ fullpath = canonicalize_file_name (catdir);
+ if (!fullpath) {
+ if (quiet < 2) {
+ if (errno == ENOENT)
+ error (0, 0, _("warning: %s is a dangling symlink"), fullpath);
+ else
+ error (0, errno,
+ _("can't resolve %s"),
+ catdir);
+ }
+ } else {
+ char *catdir_base;
+
+ free (fullpath);
+ drop_effective_privs ();
+ pipeline_start (decomp);
+ regain_effective_privs ();
+
+ strays++;
+
+ lg.type = CATPAGE;
+ catdir_base = base_name (catdir);
+ if (find_name_decompressed (decomp,
+ catdir_base,
+ &lg)) {
+ struct page_description *descs;
+ strays++;
+ descs = parse_descriptions
+ (mandir_base, lg.whatis);
+ if (descs) {
+ store_descriptions
+ (dbf, descs, &info,
+ NULL, mandir_base,
+ NULL);
+ free_descriptions (descs);
+ }
+ } else if (quiet < 2)
+ error (0, 0, _("warning: %s: whatis parse for %s(%s) failed"),
+ catdir, mandir_base, info.sec);
+ free (catdir_base);
+ }
+
+ free (lg.whatis);
+ pipeline_free (decomp);
+next_exists:
+ free_mandata_struct (exists);
+ free (mandir_base);
+ }
+next_section:
+ free (section);
+next_name:
+ free (names[i]);
+ }
+ free (names);
+ return strays;
+}
+
+static int open_catdir (MYDBM_FILE dbf)
+{
+ DIR *cdir;
+ struct dirent *catlist;
+ size_t catlen, manlen;
+ int strays = 0;
+
+ cdir = opendir (catdir);
+ if (!cdir) {
+ error (0, errno, _("can't search directory %s"), catdir);
+ return 0;
+ }
+
+ if (!quiet)
+ printf (_("Checking for stray cats under %s...\n"), catdir);
+
+ catdir = appendstr (catdir, "/", (void *) 0);
+ mandir = appendstr (mandir, "/", (void *) 0);
+ catlen = strlen (catdir);
+ manlen = strlen (mandir);
+
+ /* should make this case insensitive */
+ while ((catlist = readdir (cdir))) {
+ char *t1;
+
+ if (strncmp (catlist->d_name, "cat", 3) != 0)
+ continue;
+
+ catdir = appendstr (catdir, catlist->d_name, (void *) 0);
+ mandir = appendstr (mandir, catlist->d_name, (void *) 0);
+
+ *(t1 = mandir + manlen) = 'm';
+ *(t1 + 2) = 'n';
+
+ strays += check_for_stray (dbf);
+
+ *(catdir + catlen) = *(mandir + manlen) = '\0';
+ }
+ closedir (cdir);
+ return strays;
+}
+
+int straycats (const char *manpath)
+{
+ MYDBM_FILE dbf;
+ char *catpath;
+ int strays;
+
+ dbf = MYDBM_RWOPEN (database);
+ if (dbf && dbver_rd (dbf)) {
+ MYDBM_CLOSE (dbf);
+ dbf = NULL;
+ }
+ if (!dbf) {
+ error (0, errno, _("warning: can't update index cache %s"),
+ database);
+ return 0;
+ }
+
+ catpath = get_catpath (manpath, SYSTEM_CAT | USER_CAT);
+
+ /* look in the usual catpath location */
+ mandir = xstrdup (manpath);
+ catdir = xstrdup (manpath);
+ strays = open_catdir (dbf);
+
+ /* look in the alternate catpath location if we have one
+ and it's different from the usual catpath */
+
+ if (catpath)
+ debug ("catpath: %s, manpath: %s\n", catpath, manpath);
+
+ if (catpath && strcmp (catpath, manpath) != 0) {
+ *mandir = *catdir = '\0';
+ mandir = appendstr (mandir, manpath, (void *) 0);
+ catdir = appendstr (catdir, catpath, (void *) 0);
+ strays += open_catdir (dbf);
+ }
+
+ free (mandir);
+ free (catdir);
+
+ free (catpath);
+
+ MYDBM_CLOSE (dbf);
+ return strays;
+}
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